<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        :closable="false"
        center
        show-icon
      ></el-alert>
      <el-steps
        :space="200"
        :active="activeStepIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addGoodForm"
        :rules="addGoodRules"
        ref="ruleFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          tab-position="left"
          v-model="activeStepIndex"
          :before-leave="stoptap"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addGoodForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input
                v-model="addGoodForm.goods_price"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label=" 商品数量" prop="goods_number">
              <el-input
                v-model="addGoodForm.goods_number"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input
                v-model="addGoodForm.goods_weight"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="seletedKeyValue"
                :options="cateList"
                :props="propsConfig"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableList"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableList"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              class="upload-demo"
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :on-success="uploadResponse"
              :headers="getToken"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor
              ref="myQuillEditor"
              v-model="addGoodForm.goods_introduce"
            />
            <el-button type="primary" class="addGoodBtn" @click="add">
              添加商品
            </el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="30%"
    >
      <img :src="previewImgPath" alt="" class="preview_img" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'loadsh'
export default {
  data() {
    return {
      activeStepIndex: '0',
      addGoodForm: {
        goods_name: '',
        goods_price: '',
        goods_number: '',
        goods_weight: '',
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      manyTableList: [],
      onlyTableList: [],
      cateList: [],
      seletedKeyValue: [],
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      getToken: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewDialogVisible: false,
      previewImgPath: '',
      propsConfig: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      addGoodRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trgger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类数据失败')
      }
      this.cateList = res.data
    },
    handleChange() {
      if (this.seletedKeyValue.length !== 3) {
        return (this.seletedKeyValue = [])
      }
      this.addGoodForm.goods_cat = this.seletedKeyValue
      console.log(this.seletedKeyValue)
    },
    stoptap(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.seletedKeyValue.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
      console.log(activeName)
    },
    async tabClick() {
      if (this.activeStepIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取分类参数失败')
        }

        res.data.forEach(item => {
          if (item.attr_vals === '') {
            item.attr_vals = []
            return
          }
          item.attr_vals = item.attr_vals.split(' ')
        })
        this.manyTableList = res.data
        console.log(this.manyTableList)
      } else if (this.activeStepIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取分类参数失败')
        }
        this.onlyTableList = res.data
        console.log(res.data)
      }
    },
    handlePreview(file) {
      this.previewDialogVisible = true
      this.previewImgPath = file.response.data.url
      console.log(file)
    },
    handleRemove(file) {
      var i = this.addGoodForm.pics.findIndex(
        item => item.pic === file.response.data.tmp_path
      )
      this.addGoodForm.pics.splice(i, 1)
    },
    async uploadResponse(response, file) {
      console.log(response)
      // if (response.meta.status !== 200) {
      //   return this.$message.error('客户端图片上传失败')
      // }
      // const { data: res } = await this.$http.post('upload', file)
      // if (res.meta.status !== 200) {
      //   return this.$message.error('后端图片上传失败')
      // }
      // this.$message.success('图片上传成功')
      this.addGoodForm.pics.push({ pic: response.data.tmp_path })
      console.log(this.addGoodForm.pics)
    },
    add() {
      this.$refs.ruleFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请输入必填字段')
        }
        var form = _.cloneDeep(this.addGoodForm)
        form.goods_cat = form.goods_cat.join(',')
        this.manyTableList.forEach(item => {
          var newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addGoodForm.attrs.push(newInfo)
        })
        this.onlyTableList.forEach(item => {
          var newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addGoodForm.attrs.push(newInfo)
        })
        form.attrs = this.addGoodForm.attrs
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败')
        }
        this.$router.push('/goods')
        this.$message.success('添加商品成功')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addGoodForm.goods_cat.length !== 3) {
        return []
      }
      return this.addGoodForm.goods_cat[2]
    }
  }
}
</script>

<style lang="less" scope>
.el-checkbox {
  margin: 5px 20px 0 0 !important;
}
.preview_img {
  width: 100%;
}
.ql-editor {
  height: 300px !important;
}
.addGoodBtn {
  margin: 10px 0 0 0 !important;
}
</style>
